Power tool
AssigneeRobert Bosch GmbH
InventorAdolf Zaiser
Life of this patent
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Abstract
A power tool (10) with a housing (12) which accommodates a driven shaft (32) for holding a material-removing tool (40) and which sets the driven shaft into rotary oscillating motion capable of being produced by an eccentric (22) rotating around an axis extending at a right angle to the driven shaft (32), the eccentric engaging in a connecting element coupled with the driven shaft (32), is usable in a more diverse manner because the rotary oscillating motion of the driven shaft (32) and, therefore, the tool (40), is adjustable with a certain travel and is therefore adaptable to special applications.
Claims10
A power tool (10) with a housing (12) which accommodates a driven shaft (32) for holding a material-removing tool (40) and which sets the driven shaft into rotary oscillating motion produced by an eccentric (22) rotating around an axis extending at a right angle to the driven shaft (32), the eccentric engaging in a connecting element coupled with the driven shaft (32),
- wherein a selected travel of the rotary oscillating motion of the driven shaft (32) and, therefore, of the tool (40), is adjustable, wherein the connecting element is a fork, wherein the fork encompasses the eccentric (22, 24) such that rotation of the eccentric brings about a reciprocating motion of the fork and transfers the reciprocating motion to the driven shaft (32),
- wherein the eccentric (22, 24) is supported in a longitudinally displaceable, lockable manner in parallel with the fork prongs (28) with minimal play, within an enclosure of the fork (26).
A power tool (10) with a housing (12) which accommodates a driven shaft (32) for holding a material-removing tool (40) and which sets the driven shaft into rotary oscillating motion produced by an eccentric (22) rotating around an axis extending at a right angle to the driven shaft (32), the eccentric engaging in a connecting element coupled with the driven shaft (32),
- wherein a selected travel of the rotary oscillating motion of the driven shaft (32) and, therefore, the tool (40), is adjustable, wherein the connecting element is a fork having fork prongs, wherein the fork prongs (28) parallel with the driven shaft (32) each form a running surface (33) for the eccentric (22, 24), wherein each running surface (33) forms a concave groove which extends parallel to the drive shaft (16) with a radius of curvature which corresponds to a radius of an outer race (27) of a rolling bearing (24) with an eccentricity of the roller bearing relative to the axis (17) of the drive shaft (16).
Dependencies are inferred from the claim text.